Anodic formation and characterization of nanoporous InP in aqueous KOH electrolytes

Show simple item record O'Dwyer, Colm Buckley, D. Noel Sutton, David Newcomb, Simon B. 2016-07-07T11:44:09Z 2016-07-07T11:44:09Z 2006-10-11
dc.identifier.citation O'Dwyer, C., Buckley, D. N., Sutton, D. and Newcomb, S. B. (2006) 'Anodic formation and characterization of nanoporous InP in aqueous KOH electrolytes', Journal of The Electrochemical Society, 153(12), pp. G1039-G1046. en
dc.identifier.volume 153 en
dc.identifier.issued 12 en
dc.identifier.startpage G1039 en
dc.identifier.endpage G1046 en
dc.identifier.issn 0013-4651
dc.identifier.doi 10.1149/1.2354441
dc.description.abstract The anodic behavior of highly doped (> 1018 cm-3) n-InP in aqueous KOH was investigated. Electrodes anodized in the absence of light in 2- 5 mol dm-3 KOH at a constant potential of 0.5- 0.75 V (SCE), or subjected to linear potential sweeps to potentials in this range, were shown to exhibit the formation of a nanoporous subsurface region. Both linear sweep voltammograms and current-time curves at constant potential showed a characteristic anodic peak, corresponding to formation of the nanoporous region. No porous region was formed during anodization in 1 mol dm-3 KOH. The nanoporous region was examined using transmission electron microscopy and found to have a thickness of some 1- 3 μm depending on the anodization conditions and to be located beneath a thin (typically ∼40 nm), dense, near-surface layer. The pores varied in width from 25 to 75 nm and both the pore width and porous region thickness were found to decrease with increasing KOH concentration. The porosity was approximately 35%. The porous layer structure is shown to form by the localized penetration of surface pits into the InP, and the dense, near-surface layer is consistent with the effect of electron depletion at the surface of the semiconductor. en
dc.description.sponsorship Higher Education Authority (HEA Programme for Research in Third Level Institutions PRTLI); University of Limerick (Materials and Surface Science Institute (MSSI)) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Electrochemical Society en
dc.rights © 2006 The Electrochemical Society. All rights reserved. en
dc.subject Indium compounds en
dc.subject III-V semiconductors en
dc.subject Nanoporous materials en
dc.subject Nanotechnology en
dc.subject Anodisation en
dc.subject Electrolytes en
dc.subject Voltammetry (chemical analysis) en
dc.subject Transmission electron microscopy en
dc.subject Porosity en
dc.subject Semiconductor growth en
dc.title Anodic formation and characterization of nanoporous InP in aqueous KOH electrolytes en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Colm O'Dwyer, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2012-11-29T18:16:08Z
dc.description.version Accepted Version en
dc.internal.rssid 162343077
dc.contributor.funder Enterprise Ireland en
dc.contributor.funder Higher Education Authority en
dc.contributor.funder University of Limerick en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of The Electrochemical Society en
dc.internal.copyrightchecked No. !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en

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